Oil-furnace for automatically heating metal blanks.



No. 825,537. PATBNTED JULY 10 1908. M. HOOPES. OIL FURNACE FOR AUTOMATICALLY HEATING METAL BLANKS.

ABPLIGATION TILED I'BB.1T.1906.

3 SHBETSSHEBT 1.

7 '51 w h. M We 6 e No. 825,537. PATENTED JULY 18 1966'.

- M. HGQPES. OIL FURNACE FOR AUTOMATICALLY HEATING METAL BLANKS.

APELIUATIQN YILED FEB-1'1. 1906.

3 BKBETSSHEBT 2.

aux

\ Wage/0+ tiwewurtr No. 825,537. PATENTED JULY 10, 1906.

M. HOOPES.

OIL FURNACE FOR AUTOMATICALLY HEATING METAL BLANKS. AifLiGA'EIOR mum IEB 17. 1906.

3 SHEETS-$1125? 3.

" .like g'aws for blanks in position between the same, wheels 1 33 UNITED STATES PATENT OFFICE MAoMiLLAN HOOPES, or PHILADELPHIA, PENNSYLVANIA.

OIL-FURNACE FOR AUTOMATICALLY HEATING METAL BLA'NKS.

fipecifleation of Letters Patent.

Patented July 10, 1996,

Applieatienfilad istrnaryi'f, 1966' Serial No. 301,603.

To all whom it may concern:

Be it known that I, MACMILLAN Hoorns, a

citizen of the United States, residing at the 't of Philadelphia, in the county of Pl1ilade phia and State of Pennsylvania, have invented certain new and useful Irn rcvements in OilFurnaces for Automatically Heating Metal Blanks, of which the following is a specification.

My invention has relation to an oil-furnace for heatin metal blanks; and in such connection it re ates to the construction and arrangement of the furnace to automatically conduct metal blanks through the furnace, so as to heat the same in passage thercthrough.

The first, to

provide an oil-furnace with endlesschains, t

e links of which are provided with indented projections formin incer-like jaws to securely hold the metal b anks inpusitien during passe e through the furnace;

second, to provide t e furnace with wheels to' actuate chains and hold the same in enga ement with the 11 per surface of certain of e 2% e heating-charnher ef the 9 wells forming t furnace; third, to so arrange the actuatingwheels for the chains as to render'the same readily accessible and removable from the furnace; fourth, to provide the oil-furnace with a hood partially closed. at its a pe'r'end to form, in conjunction with the walls of the 'heatin -chamber of the furnace, lon itudinal slots t ough which the chains an hlanks are conducted; fifth, to support the side Walls of the hood of the furnace with metal strips to permit of readily removing and replacing the fire-brick forming the same, and, sixth, o rovidc the furnace with an air-pipe .to heat t e air and oil prior to its introduction into the heating-chamber of the furnace. The nature and scope of my invention will be morejully understood from the following description, taken in connection with the accompimying drawings, forming part hereof, in w 'ch Figure 1 is aview illustrating, partl "in side elevation and partlyinsection, an oilrnace, a chain having projections forming pincerengaging and locking metal for conducting the chain into and out of the heat' -cham er of the furnace, a hood partial] c osed at its up or end and formed of firerick supported y metal strips, an airpipe arrange as well as oil, prior to its introduction into principal objects of my invention'are,

from the furnace.

above the hood for heating air;

the furnace, and a water-tank for coolin the chain, all embodfing main features 0 my said invention. ig. 2 is a detail view, enlarged, illustratin partly in side elevation and partly in section, the left-hand end portion of the furnace, the manner of arranging supporting-wheels for the chain in the walls of the furnace to permit the chain to release the metal blanks immediately after leaving the heating-chamber of the furnace. Fig. 3 is aivertieal sectional view of the furnace, illustrating the heating-chamber thereof, the manner of supporting the chain by the side walls of'the chamber, the hood made tapering and partially closed at its upper end, an air-pipe arranged above the sarn'e'and a tank to permit of the read removal of the chains ig. 4 is a sectienalview oi the hood on the line a: a of Rigid? Fig. 5 is an end elevational View of the furnace, illustrating means for actnating" the chains and 01 supporting the side walls of the hood and the airspipe thereof; and Fi 6 isa detail view illustrating in horizonta section a portion of the heating-chamber of the furnace, the manner of arranging chambers for the reception of so porting-wheels for the chains therein, and 13% by rods forming an axle for the chain-supportin wheels.

eferring to the drawings, (t represents standards which support the oil-furnace proper, consisting of a metal bottom plate 6 to which the standards are secured, en piates a and b, and side lates b and 5, which are secured to the en plates 12* and 6', preferably by bolts 6, passing through the side piatlnr'b and l1 and held in engagement therewith by nuts c as shown in F: s. 1 and 6. These plates 6, 8', b, b, and b orm as sembled, a reetan lar casing which is hned in its interior, re ably with a layer of clay d and fire-brie d to form a heat here. The 'end platesb and 5 of t e heating-chamher e are provided with substantially triangularrsheped extensions 5 and b, also protected against the influence of heat by slayer of cla d and fire-brick d. The

"extensions 5 an b, by means i of strips or harsf, holtedto the same serve to so port leg and g, comlposed oi fire-brick, w ch, *innnninnetion wit the extensions 5 and 6, for the fire chember e.

in order to render the firs-brickjorming the walls 9 and g removable, certain of the hamhood It, held a certain distance above a connection oi the side walls %the same throug same, by means of bolts f, are connected with their respective bars f, while all the brick preferab y provided with grooves g and tongues g are interlocked with each other, as shown in Fig. 4. At its upper end the hood h is partially closed b fire-brick 9 leaving 0 enings' 9, between w ich a certain amounto heat and flame rising from the firechamber are permitted to esca e, so as to heat a ipe i, which, by means 0 brackets b, secure to the extensions b and 1 is held a certain distance above the hood h. The pipe 'i is preferabl U-shaped and serves to conduct air intro uced therein by a blower (not shown) with the heating-chamber e, which air by passing through the ,pi is highly heated by the portion resting aiiibve the hood h.

In order to heat oil and to commingle the heated oil with heated air to partially gasify the same prior to its introduction lnto the heating-chamber e, the oil-supply pipe I is arranged within the branches 1' and 1', of the pipe t, while a pipe I, connected with the ranch i and with the oil-supply pipe 1, serves to conduct heated air from the pipe 4, into the same. An air-valve i, connecting the pipe 01 with an extension 11, serves to. control the air-supply to the heatingrhamber 0 while the oil-sup 1y to the same is controlled by a valve 1. he lower ortion g of the Walls 9 and g of the hood in conjunction with the upper portion d of the side walls of the heatin -chamber e, form 10 itudinal slots 6 an e, throu h which the greater amount of heat and ame generated in the heating-chamber e and revented from escaping upward throu h t e hood h is forced Ii the slots e and e.

ough these slots, by means of endless chains m and m, are conducted metal blanks o to be heated, which chains are actuated by the following preferred mechanism. As

shown in Figs. 1, 5, and 6, to the end late b of the heating-chamber e by means 0 brackets r, is secured a she t r, provided with sprocket-gears r, r, and r. The outer sprocket-gears r and r serve to hold the endless chains m and m in position on the upper surface d of theside walls of the heatingchamber c and to move the chains over this 'suriace when the shaft r is rotated by the sprocketear r, which is actuated by a sprocket-c ain from any suitable source of power. (Not shown.) At the end of the surace d of the heatingwhamber e the endless chains m and m ass over guide-wheels 8, supported, prefers. ly, by one of the up or connecting-rods c as shown in Figs. 2 and 6. In order to hold the guide-wheels s in proper position with respect to the chains m and m thesameare arranged in chambers d forme in the layer of clay d and brick d thus protecting the same from the influence'of the heat generated in the chamber 0.

As shown in Figs. 1 and 2, the wheels 8 do not project above the surface d of the walls of the heating-chamber e nor extend beyond the end plate b of the same, thus permitting the chains in and m to pass down over the end. plate 11 of the oil-furnace. This arrangement permits of the release of the metal blanks-0 b the chains m and m as soon as the wsame ave left the heati chamber e.

This uick release of the metal lanks 0 per 'mits t e same to be maintained in a condi tion in which a head can be readily formed thereon by,a headingress, tnot shown,) to which the heated blan s are conducted after leaving the oil-furnace. The heating of the blanks 0 takes lace during the passin of the same throu h t e slots e' and e of the urnace by meanso the chains m and m, which hold the blanks securely in position during the heati operation even if the same extend with their greater portion into the heatingchamber e, as shown in Fig. 3.

In order to securely grip the blanks oduring the heating operation, each of the links m of the chains m and m is provided with an extension m", having on both sides indentations m. At their upper ends the extensions m are eferably rounded and by being contrac below the same two contiguous extensions form awe. In the arallel or substantially paral el positionof t e extensions m' the conti ous indentations m thereof form a cham er or opening m, preferabl annular in outline, so as to partially surroun or embrace the metal blanks 0. In the parallel or substantiall parallel position of the extensions m the lanks o are prevented from being lifted or removed from, the chains m and m by the expanded portion m of the extensions m, which project beyond the deepest portion of the indentations 'm, and thus form a con tracted outlet for the chamber m, throu h which the blanks 0 cannot ass as long as t e chains are traveling over t e straight surface b of the side wallsof the heating-chamber e. When, however the chains m and m travel in a curved ath, for instance, over the periphery of t e sprocket-gears r and 1" and guide-wheels a, the extensions 'rn will be rought into an obliqple position with respect to each other, in whic position blanks 0 may be readily introduced between the extensions at the ri ht-hand end of the machine, while at the leftand end owing to the small diameter of the ids-wheels s, the l1iiding ofthe chains m M15 m and the bla s 0 will leave the chains by gravit The blanks 0 are conducted through t eelots e and e of the furnace with a speed which is proportional to the diameter of the blanks to be heated and to the le h of the heatinFchamber 0, through which t e same ass. he blanks o by being securely clamp to the chains in and m may heating-chamber e, to more thoroughly heat eat articles carried by hood having outlets tapering toward the that portion of the same on which a head is to he formed. Thechains m and m in order to become cool are conducted through a watertank t, supported by ledges a of the standard a of the furnace.

Having thus described the nature and objects of my invention,'what I claim as new, and desire to secure by Letters Patent, is-

1. In an oil-furnace, a heating chamber, a hood arranged above the same and formin in coniunction with certain walls of sai chamber slots, means arranged above said hood and adapted to conduct air to said heatingchamber, chains su ported by certain of the walls of said cham er for carryin articles to be heated during assa e throu said slots and said means a' aptc to be sated by the heat of said chamber.

2. In an oil-furnace, an air-pipe, a heatingchamber, ahood arranged above said heatingchamber having outlets in its upper end and forming in con unction with certain walls of the chamber slot-s, chains carrying articles passing through the slots said heatingchamber and hood arran ed to condsct the greater portion of heat t ough the slots to said chains during passe e therethrongh and the lesser portion to sai air-pi e to heat the air therein.

. ,3. In an 01 furnace, a heating-chamber, a hood having outlets taperingtoward the u er ortion thereof and located above t e eating-chamber and forming in conjunction} with certain walls of said chamber slots, an airipe arranged above said hood and heated b t e heat passing through the outlets thereo chains sup orted by certain of the walls of the heating-c amber for conducting articles to be heated through said slots, and means 'for maintainin the chains in osition on certain of the walls of said cham er and for actuating said chains.

4. In an oil-furnace, a heating-chamber, a

or ortion thereof and located above tl ie eating-chamber and forming in conjunction with certain walls of said chamber slots, an air-pi e arranged above said hood and heated by t e heat passing through the outlets thereof, chains supported by certain of the walls of the heating-chamber for conducting articles to be heated through said slots,

rocket. and guide. wheels for maintaining 8 t e chains in position on certain of the walls of said chamber. and for actuating said chains said chains and wheels arranged to permit 0 projections ex' an walls of said than:

the ready removing and replacing of said chains 5." An oil-furnace having a heating-chamber partially open at its uiper end, a hood havm openings arranged a ove the heatingcham er to artiall confine heat generated in said cham er to t e same and to permit of the exit of the greater portion at the sides of said furnace and of the lesser portion at the :pper end of the same, endless chains adapt to clamp and expose articles to be heated in said furnace, and means for maintaining the chains and articles carried by the same in a certain position with respect to the heatingchamber thereof.

6. Anoil-furnace having a heatin chamber, a hood located above said cham er and for in conjunction with certain walls slots, :3 sins havi links, said links having ed at their free ends to cm in a paral e1 or substantially parallel position openings with contracted outlets to securely clamp articles to be heated laced in said openin and means for gui g and.

mo sai chains and articles carried by the same through the slots.

' i. derail-furnace having a heating chainher,- a tapering hood hav' side walls formed of brick only, said hood ocated above said chamber and forming in conjunction with certain walls slots, chains having links, said having rejections e ended at free ends to mm in a para el or substantially parallel position openings with contreated outlets to securely clamp articles to be heatedplaced in said openings, and means for gui and moving said chains and articles carrie by the same through the slots. '8. An oil-furnace having'a 1 her line'dwith heat-resisting materia chameatin -chambers formed in said'material adapted to reccive 'dewheels, a hood having side walls and orinin inv conjunction with the side walls of sai chamber oblong slots, chains having links, said having proections arranged to clam al'fisles passing over the 1 and to release the same when occupging an'nbiique position, by passovcrsal guidewheels.

witness whereof I have hereunto set my signature in the presence of two subscribing witnesses.

MACMILLAN HOOPES. Witnesses:

J. WALTER DOUGLASS, THOMAS M. Smrrn. 

